I've used Rebusfarm 2 times now and both times its been a very stressful and counterproductive process. There 3dsmax plugin makes it almost impossible to upload a file to there render farm, I had to uninstall all other render engines apart from Corona to get this to work. There server side GUI is broken where you dont get any visual feedback on the renders being produced. You also get very little information about the submitted job once its uploaded. This means its practically impossible to flag a mistake until its to late. It's a win for Rebus as you have to pay again, makes me wonder if its designed this way deliberately. Support is a waste of time. Generally, a very bad experience and would not recommend, and they are the most expensive to boot.